package com.cc.eduuser.mapper;

import com.cc.eduuser.entity.UserMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author testjava
 * @since 2020-12-05
 */
public interface UserMemberMapper extends BaseMapper<UserMember> {

    //查询某一天的注册人数
    Integer countRegisterDay(String day);
}
